According to Apple, 32-Bit apps will lose support soon. When opening 32 – bit applications on macOS High Sierra I was prompted with a message stating that in future versions of macOS the app would not be supported. This was similar to messages on iOS 10, on opening soon-to-be unsupported applications. These applications lost support in iOS 11. So, does macOS Mojave, a future version of macOS, support 32-bit applications and allow you to open and use them?
MacOS – Does macOS Mojave (10.14) support 32 – bit Apps
32-bit64-bitmacosmojave
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Best Answer
It's confirmed on the State of the Union that the final version of macOS 10.14 Mojave support 32-bit and it will be the last macOS that support it.
From https://www.macstories.net/news/macos-mojave-a-roundup-of-all-the-little-things/
Or watch the Platforms State of the Union video at https://developer.apple.com/videos/play/wwdc2018/102/